6783220 has 12 divisors (see below), whose sum is σ = 14244804. Its totient is φ = 2713280.

The previous prime is 6783211. The next prime is 6783223. The reversal of 6783220 is 223876.

It can be written as a sum of positive squares in 2 ways, for example, as 5035536 + 1747684 = 2244^2 + 1322^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6783223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169561 + ... + 169600.

It is an arithmetic number, because the mean of its divisors is an integer number (1187067).

Almost surely, 2^6783220 is an apocalyptic number.

It is an amenable number.

6783220 is an abundant number, since it is smaller than the sum of its proper divisors (7461584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6783220 is a wasteful number, since it uses less digits than its factorization.

6783220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339170 (or 339168 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 6783220 is about 2604.4615566370. The cubic root of 6783220 is about 189.2976841674.

The spelling of 6783220 in words is "six million, seven hundred eighty-three thousand, two hundred twenty".